This is great! I've taken sort of a passive interest in this topic over the years, some papers which come to mind are [1] and [2] but I don't think I've seen a real life example of using the Kalman filter before.
I worked on air quality monitoring about 30 years ago and the equipment used a Kalman filter to remove measurement noise and give stability; it had been added to the software a number of years earlier by a mathematics student who was working as a summer job with the company. No-one in the team had heard of it before but it solved lots of the stability issues and was core to the system ever after.
[1] https://www.sciencedirect.com/science/article/abs/pii/002192...
[2] https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=924...